I have a problem with dried grass clippings. Some time back, my lawn grew really tall, and I mowed quite a bit of it. I left the large grass clippings on the lawn thinking that it will help as mulch. However, because too many clippings were left on the lawn surface, they blocked light from the plants
and possibly caused matting. The grass beneath the clippings died as if I had placed a solid object on it. Since then, the lawn has had these big patches showing "dried straw" with no signs of any new grass.
Can someone please point me to the right steps of action I need to take so that I can make my lawn fully green again?